function oneway()
{
	//alert("abcd");
	var m = document.getElementById("picture_minus");
	if ( m.alt=="minus")
	{
		m.src = "images/add.png";
		m.alt="add";
		document.getElementById("hidden").style.visibility = "hidden";
		document.getElementById("oneway_text").innerText = "Return trip?";
	}
	else
	{
		m.src = "images/minus.png";
		m.alt = "minus";
		document.getElementById("hidden").style.visibility = "visible";
		document.getElementById("oneway_text").innerText = "One way trip?";
	}
}